
MarsForge · X community
First-principles briefings, habitat concepts, and the crew building a multiplanetary future. The live conversation is on X. This site is the public record — research films, community briefings, essays, and Imagine Mars episodes. Watch the full films in the video archive.
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Imagine Mars
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A rover wheel fractured an ordinary stone in Gediz Vallis. Inside: yellow crystals no mission had confirmed on Mars — native elemental sulfur.
4:23Watch hereStarship can cross millions of miles of vacuum. Return fuel cannot. Ice sits beyond 40°, the equator is where you want to land, and Arcadia is a thin overlap under meters of abrasive dust.
2026-08-19
3:59Watch hereCollision versus the internal cauldron. Strip the atmosphere, exaggerate the topography, and Mars is not a sphere — it is a scar. 6 km of crust at Isidis, 117 km under Tharsis, a 5 km step at the equator.
2026-08-19 · 2.4k views
7:27Deriving the Martian surface power budget. 3.4 MW for propellant. Solar dies in a storm. Fission is the gate.
2026-08-09 · 3.5k views·Watch on X
5:27Stainless mass makes return impossible until silicon, ISRU, and cadence close as one machine.
2026-05-22 · 49k views·Watch on X
1:12Warm Mars and the ice inventory becomes an ocean nearly a mile deep across 40% of the surface.
2026-08-15 · 44k views·Watch on X
1:07Elon’s terraforming path: thaw the CO2 and ice. On Mars, global warming is the solution.
2025-12-21 · 47k views·Watch on X
1:46Launch escape towers protect a fraction of ascent. Starship discards the architecture. Engine-out must be a non-event.
2026-08-16 · 5.5k views·Watch on X
0:47Vacuum, 28-day nights, no atmosphere. Mars keeps volatiles, a 24.6-hour day, and 97% of Earth’s land.
2026-07-14 · 2.3k views·Watch on X
1:152026 cryogenic transfer, 2030s lunar city, 20-year Mars horizon. An engineered timeline, not a mood board.
2026-07-03 · 1.6k views·Watch on X
1:08Mars is not an escape from Earth. Dangerous, cramped, worse food, higher risk of death. That is the offer.
2025-12-22 · 130k views·Watch on X
0:15Land, build a city, make it self-sustaining. The single-planet era ends on that sequence.
2025-12-23 · 14k views·Watch on X
2:26Humanoid robots plus local solar convert resources into more robots, power, and nodes. Closed industrial loop.
2026-06-17 · 14k views·Watch on X
0:44Energy, food, materials, and propellant from local resources. Reuse, refueling, and ISRU as one flywheel.
2026-07-06 · 1.1k views·Watch on X
Public papers
Desk essays compiled from the X record and MarsForge notes, plus the Medium pieces that were already public. Everything here opens on this site or a public page — nothing behind a personal login.
Spoken desk
Lacey Presley examines SpaceX innovations, Mars colonization strategy, and the first-principles thinking required to make humanity multiplanetary. The full episode list lives on the podcast page. Individual episodes also land on the X timeline.